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Vulnerability · Published Jun 8, 2026 · Assigned by redhat

CVE-2026-11611389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in Red Hat Directory Server 11 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 84.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of service. Additional race conditions in plugin thread lifecycle can cause crashes during connection teardown or shutdown.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12389-ds-baseno fix listedDEBIAN-CVE-2026-11611
Debian:13389-ds-baseno fix listedDEBIAN-CVE-2026-11611
Ubuntu:22.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-11611
Ubuntu:24.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-11611
Ubuntu:25.10389-ds-baseno fix listedUBUNTU-CVE-2026-11611
Ubuntu:26.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-11611
Ubuntu:26.10389-ds-baseno fix listedUBUNTU-CVE-2026-11611

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Directory Server 11 see references
Red Hat Red Hat Directory Server 12 see references
Red Hat Red Hat Directory Server 13 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References